Uplink reference signal design for LTE compatible GEO multiple-beam mobile satellite communication system
Advanced Communication Technology（2013）
摘要
For 3GPP long term evolution (LTE) uplink, reference signal (RS) is an important kind of physical signal which is primarily used for demodulation and channel sounding. However, in the multiple-beam satellite environments, the inter-beam and intra-beam interference will break the orthogonality of uplink RS (UL-RS) from different user equipments (UEs), resulting in system performance degradation. In this paper, according to the characteristics of the satellite channels and inter/intra-beam interference, we analyze the compatibility problem, calculate the available capacity for the existing UL-RS in multiple-beam satellite environment, and propose a novel uplink RS scheme which includes UL-RS sparsing, OCC scrambling and resource configuration for LTE compatible GEO multiple-beam mobile satellite communication system. Simulation results prove the effectiveness of the proposed UL-RS scheme.
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关键词
mobile satellite communication,demodulation,design,geo multiple-beam mobile satellite communication system,radiofrequency interference,lte compatible mobile satellite communication system,intrabeam interference,multi-beam,satellite,ul-rs sparsing,satellite channels,demodulation sounding,compatibility problem analysis,user equipments,ul-rs,wireless channels,3gpp long term evolution uplink,3g mobile communication,occ scrambling,uplink reference signal design,resource configuration,long term evolution,interbeam interference,system performance degradation,channel sounding,ue
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